Locomotive.



10.844,9'78. PATENTED PEB. 19, 1907. s. M. VAUGLAIN.

LOGOMOTIVE. y APPLIOATION FILED APB.. 25.1906.

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a VM PATENTED FEB. 19, l90'7.

. VAUGLAIN.

LOCOMOTIVE'. APPLIQATION FILED APR.25,1906.

2 SHEETS-SHEET 2.

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B URN HAM, WILLIAMS @sa CUMPANY, OF PHILADELPHIA, PENNSYLVANIA,

A FIRM.

Locomotora;

To (LH Liz/1,0711 t wmf/y concern:

Be it known that l, SAMUEL M. VAUCLALN, e citizen. of the UnitedStates, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Locomotives, of which the following is e speciiicetion.

My invention. relates to that el: of locomotives lmown'es articulated or doubletre-me'77 locomotives, in which there are tivo trames, one situated in advance of the other, tlie`two frames being ivoted together, so that while there is e. ong wheel-bese locomotive/cen ass around comparatively n this type of locomotive the boiler is carried by one frame and over; hengs the other and there/is e pair of cylinders carried by each eme. In the present instance the locomotive is of the compound e, the high-pressure cylinders being eerriei by the frame to which the boiler is rigic ly secured, while the low-pressure cylinders ere cenriel by the other freine. A. locomotive othis 'type hes a large boiler capacity, long wheel-base, and yet can be used on roe having comparatively sharp curves.

The object oi' my present invention relates to the ineens of pivoting one frame of the locomotive to the other. Ileretof'ore in loco- ;fnotives of this type the frames turned on s rigid pivot, so that in some instances, especially turning from e straight track to e curve or turning en S-curve, the side ricti on of the wheels against the 'tracks Wes `eXcess've :md streine'lv the locomotive considerably. By my invention I malte e yielding pivot, so tluit when the locomotive takes the curve the 'pivot will accommodate itself to the posit-ion of the frames, enabling' the locomotive to take lthe curves more readily oud with less friction then heretofore.

In the accompanying drawings, Figure 1 i ide view of e. locomotive illustrating my inw ention, the freni es of the locomotive being in. full lines andthe boiler and cob in dotted lines. The wheels at one side have been removed to more clearly illustrate the invention. *L 2 is en enlarged side View, showing the connncction between the'two frames. V 3 e sectie-nel plsu View on the lne 33, 2. Fig. 4 is e vertical sectionel'wdew on the line 4' 4, liig. 2; iuiiliflczltion.

il is lthe rear treme, in the present instance carrying the high-pressure cylinder C, theiy Secchia-ation of Letters Patent. Application filed April 2l5.1906. Serial No. 313.647.

l l 1 l Patented Feb. 19, 1907.

boiler l, and the can B. This lrsrnehas the usuel axles o a, on which the wheels a are mounted. .l

D is e frame situated in advance of the frame A and pivoted thereto in the manner described hereinafter, and this freine carries the low-pressure cylinder C and supports d d for the overhenging eortion of the boiler B and axles. d', on w ich ere mounted the wheels d". Iierctofore the two remes were pivoted together :it e e by en ordinary pivot.

Referiingnow to Figs. 2, 3, and 4,- the frame A has extensions A end A2, and mounted in bearings e azis e pivot-pin e,` end mounted in besrings a? c3 in the lower extension is a. Divot-pin e. Projecting from the freine I) is' en erm D, which is mounted 4 in he space between thetwo beerin Y s e2 a of the extension A of the freine A, en projecting from the treme D is en erm D2, extending intel the space between the bearings a3 a of the :ttension A2, es clearly illustrated in Fig. e1. In the erm D is en elongated slot d3, and errenged to slide in thisslt is sblook E, le which pesses the ivot-pin e. The

e isv held in'plece y s strep e2, Fig'. 4. luci ited in the slot d* in the extension l is block E', through which the pivot-pin e passes, so that while thc two frames are pivoted together4 the extensions D Dzsre arrsnged tol ve e limited sliding motion on 'the lblocksl 1 I ried by the pivot-pins that whenturniin curves the strein is teken olf thc Wheels und side frames. lvlounted hetween the end of the erm D sind e plate f secured to the extension A is e. pressure-spring, F. This pressure-sprin is held between two heads f in the present insti-nico, extensions on the hesds being mounted in sockets] and Fig. 5 is c view of e socket in e screw-plug' t2, adjustable in theexsprings are only mounted between the arm D v also be dupiiceted and theextension A@ although they may between the erm'Dz end the extension 'AT ne'of these s rings is compressed when the erm-'moves center, While' the other spring expendsjthe tendency of the springs bein to4 keepvthe erm ill-e oentiei position smdw en the from@ ereon-"e straight treckto tem-i to keep ,the

` 'two frames in eiinement:

mounted, es shown io Fig. 5,

[y pin,

' the springs.

in vsome instances the s.

E and the emi E', the slot iii. the arm in this meterme being elongated for the reception of The springs moyA be tension-springenetood -of @impression-springs and secured tothe rirm D end to the extension A Whertde mor v Thus it will be 'seen that by my improve-- ment I relieve the frame :md Wheeis of conlsideable strain when :tssinv onto or off o curveor passing noun edoulble curve by e1.- iowing a eertein amount oi' lost motioh et the pivot-point.

I 1,'. The combination in e 'locomotive citwo frames, one inv advance' of thev other,A

Wheels corrieri by each .fre-mofa rigid exten-4 sion on one frame omi e Vrigid erm oiilthev other frame, e pivotiin conneeting lthe two perts, seid pivot-pio sing rigidly connected to one vport and yieldingiy eomieeted toA the other to allow 'o limited movement of .one

frame 'inrespect to the other, substsiitieiiyos described. 2. The combination in e iocomotive'g'gof two frames, one mounted in edveiiceof theL other, each vframe carrying Wheels, en cxteil 'en erm on 'the other, le ivot-pin eirricd by one port, the lother part' sion on one frame,

eing so shaped os to eiiow 'for e certem amount of lost motion between vit enti the endsidc springs mounted between the extension and the erm, subste'etisiiy scribed; y

3. The combination in e locomotive, of

rom the iirigs may be otweon the boial es described.

, sion, a

eee-eve tyvoirehes, onefreree having two exten sions, bearings m eachextension, e pivot-pin carried by thebeerings of each extension, the other' freine having tvvo arms, one erm'projeetje between the bearings of one extension emi; 4t e other erm projecting betweenv the [beatings of the other extension, biocks eerfiedl by the Eins, the sei arms beiog slotted to 'receive t e blocks, the siotsbeingeiongated so es toA aiiow e, limited lateral movoment ofthe blocks in' the orme,

substeritioilyy 4., The .combilmtion ine viooemotive'n off tworames; one mounted in advance of the other, one frame having two extensions one below'the other, bearings in each extension and e pivot-pin mounted. in theupperextcn ivot-pin mounted in the lower extension2 a lock carried by each pivot-pio, two' erms projecting from the other frame and one erm moimted ebove the other, one erm having en elongated slot to receive the upper block emi the other erm having eri eiongsted v'slotte receive the lower block, end springs 'molmtedhetween the sides of the'up evene ,emi the 1;" per extension, substentiei y es tieombinstion in a 1ooomotive,fof one mounted in edvemce oi the otoer, eli-extension on one frame, e pivot-pini costieriivy seid extension, en erm on the yother fremehevingen eiongeted eiot, obiooimogunted on the pivot-pi11 'and mounted in 'the slot, adjustable 'piege mounted in each' 

